title: 1-[6-(3,5-Di-methyl-pyrazol-1-yl)-1,2,4,5-tetra-zin-3-yl]guanidin-2-ium perchlorate methanol monosolvate.
abstract: In the title solvated salt, C8H12N9 (+)·ClO4 (-)·CH3OH, the dihedral angle between the tetra-zine and pyrazole rings is 26.05 (7)°. The two N atoms bonded to the 1,2,4,5-tetra-zine ring deviate from the plane defined by its four N atoms by 0.234 (2) and 0.186 (2) Å. There is an intra-molecular N-H⋯N hydrogen bond between the protonated guanidine fragment and one of the tetra-zine N atoms. In the crystal, two cations and two perchlorate anions are connected via N-H⋯O hydrogen bonds into centrosymmetric assemblies. These assemblies are further linked into a two-dimensional network parallel to (100) via bifurcated O-H⋯(N,N) hydrogen bonds formed with the bridging methanol mol-ecules.
authors.affiliation: School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China.
authors.forename: Yong-Peng
authors.initials: YP
authors.lastname: Hu
authors.forename: Biao
authors.initials: B
authors.lastname: Yan
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.forename: Hai-Xia
authors.initials: HX
authors.lastname: Ma